जीव विज्ञान – Zoology – Zoology MCQ

जीव विज्ञान – Zoology: प्रश्न र उत्तर

सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।

सही: ० / ०

11. The process of exocytosis, which involves the fusion of vesicles with the plasma membrane, is most closely associated with: (a) Cellular waste removal. (b) The release of neurotransmitters at synapses. (c) The absorption of nutrients from the surrounding environment. (d) Maintaining cellular structural integrity.

    कCellular waste removal. खThe release of neurotransmitters at synapses. गThe absorption of nutrients from the surrounding environment. घMaintaining cellular structural integrity.
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

12. Which of the following best describes the function of the myelin sheath surrounding nerve fibers? (a) To provide structural support for the neuron. (b) To increase the rate of nerve impulse transmission. (c) To regulate the concentration of ions across the neuronal membrane. (d) To provide nutrients to the neuron.

    कTo provide structural support for the neuron. खTo increase the rate of nerve impulse transmission. गTo regulate the concentration of ions across the neuronal membrane. घTo provide nutrients to the neuron.
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

13. The primary function of erythrocytes (red blood cells) in mammals is: (a) To transport oxygen throughout the body. (b) To initiate blood clotting during injury. (c) To defend the body against foreign pathogens. (d) To maintain constant body temperature.

    कTo transport oxygen throughout the body. खTo initiate blood clotting during injury. गTo defend the body against foreign pathogens. घTo maintain constant body temperature.
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

14. The ‘fight or flight’ response in humans is primarily mediated by which neurotransmitter? (a) Dopamine (b) Serotonin (c) Norepinephrine (d) GABA

    कDopamine खSerotonin गNorepinephrine घGABA
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

15. What is the primary function of goblet cells in the human respiratory tract? (a) To filter inhaled air. (b) To produce mucus, which traps pathogens and debris. (c) To conduct air to the lungs. (d) To facilitate gas exchange between air and blood.

    कTo filter inhaled air. खTo produce mucus, which traps pathogens and debris. गTo conduct air to the lungs. घTo facilitate gas exchange between air and blood.
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

16. The process of metamorphosis observed in amphibians like tadpoles is primarily controlled by which group of hormones? (a) Insulin and Glucagon (b) Thyroxine and Cortisol (c) Ecdysone and Juvenile Hormone (d) Adrenaline and Noradrenaline

    कInsulin and Glucagon खThyroxine and Cortisol गEcdysone and Juvenile Hormone घAdrenaline and Noradrenaline
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

17. Which of the following statements accurately describes the process of osmosis? (a) Movement of solute from a region of high concentration to one of low concentration. (b) Movement of solvent from a region of low concentration to one of high concentration. (c) Random movement of molecules in all directions within a fluid. (d) Facilitated diffusion driven by ATP hydrolysis.

    कMovement of solute from a region of high concentration to one of low concentration. खMovement of solvent from a region of low concentration to one of high concentration. गRandom movement of molecules in all directions within a fluid. घFacilitated diffusion driven by ATP hydrolysis.
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

18. Which of the following best describes the role of mucus in the respiratory system? (a) It is primarily responsible for absorbing oxygen from inhaled air. (b) It traps pathogens, debris, and excess water vapor, protecting the delicate tissues of the airways. (c) It directly stimulates muscle contraction to expel carbon dioxide from the lungs. (d) It contains enzymes that break down foreign particles into smaller, more easily phagocytosed fragments.

    क(a) It is primarily responsible for absorbing oxygen from inhaled air. ख(b) It traps pathogens, debris, and excess water vapor, protecting the delicate tissues of the airways. ग(c) It directly stimulates muscle contraction to expel carbon dioxide from the lungs. घ(d) It contains enzymes that break down foreign particles into smaller, more easily phagocytosed fragments.
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

19. The symbiotic relationship between nitrogen-fixing bacteria and legumes is an example of which ecological process? (a) Predation (b) Mutualism (c) Competition (d) Parasitism

    क(a) Predation ख(b) Mutualism ग(c) Competition घ(d) Parasitism
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।

20. Which of the following is NOT a function performed by erythrocytes (red blood cells)? (a) Transporting oxygen from the lungs to tissues throughout the body. (b) Maintaining blood pH through buffer systems. (c) Producing antibodies against foreign pathogens. (d) Facilitating blood clotting at sites of injury.

    क(a) Transporting oxygen from the lungs to tissues throughout the body. ख(b) Maintaining blood pH through buffer systems. ग(c) Producing antibodies against foreign pathogens. घ(d) Facilitating blood clotting at sites of injury.
    💬 टिप्पणी / गल्ती रिपोर्ट (०)

    छलफल / प्रश्न उत्तरमा गल्ती छ

    पठाउनुहोस्

    टिप्पणी जाँचपछि मात्र देखिन्छ।